The type of immunity that is present from birth is: MCQ with Answer and Explanation

Explanation:
Oxytocin stimulates uterine smooth muscle contractions during childbirth and milk ejection during lactation. Thyroxine regulates metabolism; calcitonin and parathyroid hormone control blood calcium. Insulin lowers blood glucose. Adrenaline increases heart rate, not decreases. This question tests the core functions of major hormones.

Explanation:
The hypothalamus is a small, highly complex region located at the base of the brain, near the pituitary gland. It is the primary link between the nervous and endocrine systems. It controls the pituitary gland (the 'master gland') both neurally (via the posterior pituitary, where it stores and releases ADH and oxytocin) and hormonally (via the anterior pituitary, by secreting releasing and inhibiting hormones that regulate the production of anterior pituitary hormones). Through the pituitary, the hypothalamus regulates a vast array of bodily functions.

Explanation:
Lysosomes are membrane-bound vesicles budded off from the Golgi apparatus. They contain powerful hydrolytic enzymes capable of breaking down proteins, lipids, and nucleic acids. They play a crucial role in autophagy, digesting worn-out cellular organelles. Thus, all three statements are biologically accurate and correct.